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Estimation of methane yields in continuous biogas reactors using kinetic and mass flow models


The measurement of methane potential during anaerobic digestion has generally been accomplished through batch assays, yet the majority of industrial plants employ a semi‐continuous feeding regime and the estimation of continuous process yield from batch data is not straightforward due to differences in kinetic rates. This communication examines a simple method, whereby batch assays were set up with very high inoculum to substrate ratios (I:S) and the results applied to a model of mass flow through a continuous process. The results found that high I:S batch assays estimated the continuous process yield to within 2.5 % of the measured value.

Authors:   Alastair James Ward, Mr. Lu Feng, Veronica Moset, Henrik Bjarne Moller
Journal:   Chemical Engineering & Technology
Year:   2018
Pages:   n/a
DOI:   10.1002/ceat.201700497
Publication date:   19-Jan-2018
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